title: High-resolution optical spectrum characterization using optical channel estimation and spectrum stitching technique.
abstract: A technique is proposed to measure the high-resolution and wide-band characterization of amplitude, phase responses, and polarization property of optical components. This technique combines the optical spectrum stitching and optical channel estimation methods. Two kinds of fiber Bragg grating based Fabry-Perot cavities with ultrafine structures have been characterized based on this technique. By using 1024 point fast Fourier transform and a narrow linewidth, wavelength-tunable laser source, a frequency resolution of ~10 MHz is realized with an optical measurement range beyond 250 GHz.
authors.affiliation: Institute of Photonics Technology, Jinan University, Guangzhou 510632, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Jin
authors.forename: Yuan
authors.initials: Y
authors.lastname: Bao
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Gui
authors.forename: Haiyan
authors.initials: H
authors.lastname: Shang
authors.forename: Xinhuan
authors.initials: X
authors.lastname: Feng
authors.forename: Jianping
authors.initials: J
authors.lastname: Li
authors.forename: Xingwen
authors.initials: X
authors.lastname: Yi
authors.forename: Changyuan
authors.initials: C
authors.lastname: Yu
authors.forename: Guifang
authors.initials: G
authors.lastname: Li
authors.forename: Chao
authors.initials: C
authors.lastname: Lu
mesh_terms: D005583:Fourier Analysis; D007834:Lasers; D055620:Optical Phenomena; D013057:Spectrum Analysis